(1) Contact or impression by touch; collision; forcible contact; force communicated. "The quarrel, by that impact driven". (Southey). (2) Mechanics. The single instantaneous stroke of a body in motion against another either in motion or at rest. Source: Websters Dictionary. Impact may refer to: In science: * Impact (mechanics), a high force or shock (mechanics) over a short time period * Impact crater, a meteor crater caused by an impact event * Impact event, the collision of a meteoroid, asteroid or comet with Earth * Impact factor, a measure of the citations to a science or social science journal Indevelopment: * Impact evaluation, a way of evaluating changes from an intervention or development program. In computing: * IMPACT (computer graphics), a computer graphics architecture for Silicon Graphics computer workstations in film, television, and radio: * Impact, a BBC World News weekday programme. * Impact (1949 film), a 1949 film noir starring Brian Donlevy and Ella Raines * Impact (1963 film), a 1963 crime thriller starring Conrad Phillips * Impact (TV mini-series), a 2008 television mini-series starring Natasha Henstridge and David James Elliott * Impact Wrestling, the primary weekly television program of Total Nonstop Action Wrestling in literature: * Bath Impact, the student newspaper for the University of Bath Students' Union, England * Impact (action entertainment magazine), a monthly action entertainment magazine that focus on Asian action cinema and anime * Impact (EC Comics), a 1955 EC Comics comic book * Impact (Image Comics), an Image Comics comic book character * Impact (novel), a 2010 novel by Douglas Preston * Impact (student magazine), a student magazine for the University of Nottingham, England * Impact Comics, a DC Comics imprint *Impact Press, an Orlando, Florida-based magazine * Impact Magazines, a UK magazine publisher in music: * Impact Records, an American record label * Impact, an album by thrash metal band Dew-Scented *Impact (Robbie Gold album), an album by Robbie Gold * Impact (Eye Empire album)Organizations: * IMPACT (organisation), a charitable organization focusing on public and preventative interventions to stop preventable disability * Impact! Miniatures, a company producing 28mm wargaming figures * International Multilateral Partnership Against Cyber Threats * Irish Municipal, Public and Civil Trade Union in sports: * Montreal Impact, a soccer (football) team in Major League Soccer, the top tier of North American professional soccer * Montreal Impact (1992–2011), predecessor to the above team, that played in several second-level North American leagues during its history Other: * Impact (typeface), a sans-serif typeface * Impact, Texas, a town in Taylor County, Texas, USA * Impact Confections, a candy company founded in 1981. An OSH glossary used in safety and health at work which is, adopted by ILO {102}. The term definition has been obtained from the secondary source